.content {
  position: relative;
  z-index: 1;
  border-radius: 4px;
  overflow: hidden;
}
.copy_btn {
  position: absolute;
  top: -1px;
  right: 5px;
  font-size: 16px;
  cursor: pointer;
}
.area {
  position: absolute;
  top: 0px;
  z-index: -1;
}
